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Cet ouvrage est une réédition numérique d’un livre paru au XXe siècle, désormais indisponible dans son format d’origine.
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Tanzanite is one thousand times rarer than diamonds The first book ever presenting this precious stone discovered only forty years ago Upon the discovery of Tanzanite in Tanzania a specimen was entrusted to the stonecutter Manuel de Souza, who shared some samples with distinguished gemologists. While the prospector thought that he had found some sapphires, he was astonished to learn that he had unearthed something altogether extraordinary. The new gem immediately caught the eye of Tiffany & Co. Since 1968, the New York-based jeweler has pushed the stone into the spotlight. It launched a campaign that was successful enough to earn tanzanite the noble title of 'gem of the 20th century'. Tanzan...
The first comprehensive history of the Information Age... how we got there and where we are going The exchange of information is essential for both the organization of nature and the social life of mankind. Until recently, communication between people was more or less limited by geographic proximity. Today, thanks to ongoing innovations in telecommunications, we live in an Information Age where distance has ceased to be an obstacle to the sharing of ideas. The Worldwide History of Telecommunications is the first comprehensive history ever written on the subject, covering every aspect of telecommunications from a global perspective. In clear, easy-to-understand language, the author presents t...
With the recent advent of technologies that make detecting art forgeries easier, the art world has become increasingly obsessed with verifying and ensuring artistic authenticity. In this unique history, Thierry Lenain examines the genealogy of faking and interrogates the anxious, often neurotic, reactions triggered in the modern art world by these clever frauds. Lenain begins his history in the Middle Ages, when the issue of false relics and miracles often arose. But during this time, if a relic gave rise to a cult, it would be considered as genuine even if it obviously had been forged. In the Renaissance, forgery was initially hailed as a true artistic feat. Even Michelangelo, the most reve...
Depuis la nuit des temps, le diamant exerce une fascination universelle. Ils ont été nombreux, les Tavernier, Rhodes et autres aventuriers, qui consacrèrent leur vie à l'enchantement de ses éclats. De la reine Marie-Antoinette, aux milliardaires du XXe siècle, princes de l'industrie et du pétrole, nous découvrons les mille et une péripéties des diamants célèbres, qui se portent, se cachent, s'offrent ou se revendent par amour, par passion ou par profit. En cette fin de siècle, si la mode et l'air du temps ont favorisé l'essor du bijou fantaisie, ils n'ont nullement détrôné l'or et les diamants. Boucheron, Cartier, Winston, Tiffany, créent pour une clientèle qui recherche Ã...